Engine Control Unit (Ecu): Notes
NOTE:
Disconnect battery before removing Digital Motor Electronics (DME) ECU. Disconnecting battery will clear ECU Diagnostic Trouble Codes (DTCs). Retrieve DTCs before disconnecting battery. ECU stores certain basic driveability values. ECU also receives different input values, depending on engine condition, which are compared with stored values. ECU adaptive system compares input values with stored values. ECU replacement could cause poor engine performance before all values are adapted to engine condition. Before exchanging ECU, ensure engine is at normal operating temperature. Remove old ECU, install new ECU and operate vehicle at different RPMs.